Design characteristics of corrugated trapezoidal plate heat exchangers using nanofluids

Azher M. Abed, M. A. Alghoul, Kamaruzzaman Sopian, H. A. Mohammed, Hasan sh Majdi, Ali Najah Al-Shamani

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

In this paper, fully developed turbulent flow and heat transfer behavior in trapezoidal channels using nanofluids are numerically studied. This study evaluates the effects of four different types of nanoparticles, Al2O3, CuO, SiO2 and ZnO, with different volume fractions (0-4%) and diameters (20-80nm) under constant heat flux (6kW/m2). The effects of geometrical parameters (wavy amplitudes, longitudinal pitch) of the trapezoidal channel on the thermal and flow fields are also examined. The results indicated that SiO2 has the highest Nusselt number among the nanofluids. Enhancement of heat transfer increases with particle volume concentration, but a slight increase in pressure loss with decreasing nanoparticle diameter is also observed. When nanofluids are used in a forced convection, 10% increase in average Nusselt number is observed for nanoparticles with a diameter of 20nm and at 4vol.%. Analysis of the flow and heat transfer in a corrugated trapezoidal channel is made based on the comprehensive evaluation factor J/f. The optimum (J/f) enhancement shows that the CuO nanofluid, lower concentration ratio of nanoparticles, trapezoidal height of 2.5mm and a longitudinal pitch of 6mm are the most desirable parameters for saving energy. Using nanofluids with a corrugated channel can improve the thermal performance because it can lead to more compact heat exchangers.

Original languageEnglish
Pages (from-to)88-103
Number of pages16
JournalChemical Engineering and Processing: Process Intensification
Volume87
DOIs
Publication statusPublished - 1 Jan 2015

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Heat exchangers
Nanoparticles
Nusselt number
Heat transfer
Forced convection
Turbulent flow
Heat flux
Volume fraction
Flow fields
Energy conservation
Hot Temperature

Keywords

  • Corrugated trapezoidal channel
  • Heat exchangers
  • Heat transfer
  • Nanofluids

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Energy Engineering and Power Technology

Cite this

Design characteristics of corrugated trapezoidal plate heat exchangers using nanofluids. / Abed, Azher M.; Alghoul, M. A.; Sopian, Kamaruzzaman; Mohammed, H. A.; Majdi, Hasan sh; Al-Shamani, Ali Najah.

In: Chemical Engineering and Processing: Process Intensification, Vol. 87, 01.01.2015, p. 88-103.

Research output: Contribution to journalArticle

Abed, Azher M. ; Alghoul, M. A. ; Sopian, Kamaruzzaman ; Mohammed, H. A. ; Majdi, Hasan sh ; Al-Shamani, Ali Najah. / Design characteristics of corrugated trapezoidal plate heat exchangers using nanofluids. In: Chemical Engineering and Processing: Process Intensification. 2015 ; Vol. 87. pp. 88-103.
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